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《中国物理C》（英文）编辑部
2024年10月30日
Chinese Physics C> 2002, Vol. 26> Issue(4) : 346-353 

On the Nature of f0(400-1200)

  •  Institute of High Energy Physics, CAS Beijing 100039, China2 Institute of Theoretical Physics, CAS Beijing 100080, China

  • We discuss about the nature of f0(400-1200) which we decompose into three parts, i.e., t-channel ρ meson and f2(1270) meson exchange plus an additional s-channel resonance f0(X). Below 1.2GeV of ππ invariant mass, t-channel ρ meson exchange can explain the I=2 ππ S-wave scattering very well. However, the f2(1270) meson exchange must be considered for the ππ invariant mass above 1.2GeV. With the t-channel ρ meson and f2(1270) meson exchange fixed by the isotensor ππ→ππ S-wave scattering, we re-fit the CERN-Mülich(CM) data on ππ scattering to get parameters for the f0(X). We find that it is necessary to introduce a broad 0++ resonance with a pole about 1.6-1.7GeV.
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LI Long, ZOU Bing-Song and LI Guang-Lie. On the Nature of f0(400-1200)[J]. Chinese Physics C, 2002, 26(4): 346-353.
LI Long, ZOU Bing-Song and LI Guang-Lie. On the Nature of f0(400-1200)[J]. Chinese Physics C, 2002, 26(4): 346-353. shu
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Received: 2001-09-11
Revised: 1900-01-01
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On the Nature of f0(400-1200)

    Corresponding author: LI Long,
  • Institute of High Energy Physics, CAS Beijing 100039, China2 Institute of Theoretical Physics, CAS Beijing 100080, China
  • Received Date: 2001-09-11
  • Accepted Date: 1900-01-01
  • Available Online: 2002-04-05

Abstract: We discuss about the nature of f0(400-1200) which we decompose into three parts, i.e., t-channel ρ meson and f2(1270) meson exchange plus an additional s-channel resonance f0(X). Below 1.2GeV of ππ invariant mass, t-channel ρ meson exchange can explain the I=2 ππ S-wave scattering very well. However, the f2(1270) meson exchange must be considered for the ππ invariant mass above 1.2GeV. With the t-channel ρ meson and f2(1270) meson exchange fixed by the isotensor ππ→ππ S-wave scattering, we re-fit the CERN-Mülich(CM) data on ππ scattering to get parameters for the f0(X). We find that it is necessary to introduce a broad 0++ resonance with a pole about 1.6-1.7GeV.

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